1. Running late all the time. If you always think you can cram in more things than you have time for, you’re probably an optimist . . . and you’re just doing it to a fault. People who are late a lot tend to be people who expect the best, even when it’s not realistic.
2. Chewing gum. (Is that really a “bad” habit?) Anyway, it’s actually good for you a few ways. It can make you feel more alert, boost your mood, and reduce levels of the stress hormone cortisol.
3. Daydreaming. Studies have shown it can help you be more creative. One study at Harvard found that zoning out for about 12 minutes while working on a difficult task can help you find a solution when you return to that task.
4. Using filler words like “um” and “uh.” More and more research is finding that filler words actually help us absorb what someone’s saying. Also, people who are hardworking and highly conscientious tend to use more filler words.
5. Complaining. But only if you do it right. People who complain effectively tend to be happier than people who just vent. So what does “complaining effectively” mean? It’s when you complain about something that can be fixed. And you direct your complaint to someone who can do something about it . . . not just your cat. (Business Insider)